本文關(guān)鍵詞：空間調(diào)制光譜偏振測(cè)量技術(shù)研究　出處：《中國(guó)科學(xué)技術(shù)大學(xué)》2017年碩士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： 偏振 空間調(diào)制 誤差分析 實(shí)驗(yàn)研究

【摘要】：光譜偏振探測(cè)技術(shù)是一種融合偏振技術(shù)和光譜技術(shù)的新型遙感探測(cè)技術(shù),可以獲取目標(biāo)光學(xué)輻射的偏振度、偏振角、偏振橢率、光譜等多維信息。近些年來(lái),此技術(shù)在天文觀測(cè)、目標(biāo)識(shí)別以及醫(yī)學(xué)診斷等領(lǐng)域的應(yīng)用得到了快速發(fā)展,研究和發(fā)展光譜偏振探測(cè)技術(shù),對(duì)遙感探測(cè)有重要意義。本論文首先介紹偏振探測(cè)技術(shù)的研究背景以及偏振探測(cè)技術(shù)的主要應(yīng)用領(lǐng)域,調(diào)研了國(guó)內(nèi)外調(diào)制型偏振探測(cè)技術(shù)的發(fā)展?fàn)顩r,分析和討論了偏振探測(cè)的相關(guān)理論,介紹了利用斯托克斯參量進(jìn)行偏振測(cè)量的原理和幾種常見(jiàn)調(diào)制類(lèi)型的Stokes參量偏振測(cè)量方法,并描述了各自的優(yōu)缺點(diǎn);然后分析和討論了基于復(fù)合光楔的空間振幅調(diào)制偏振光譜探測(cè)技術(shù)的相關(guān)理論,推導(dǎo)了基于單復(fù)合光楔和雙復(fù)合光楔結(jié)構(gòu)下的空間振幅調(diào)制偏振光譜探測(cè)技術(shù)的探測(cè)原理和測(cè)量方程,對(duì)雙復(fù)合光楔結(jié)構(gòu)形式進(jìn)行了分析,篩選出較為理想的光楔結(jié)構(gòu)模型;對(duì)空間調(diào)制光譜偏振測(cè)量系統(tǒng)中的關(guān)鍵偏振器件誤差進(jìn)行了研究,分析了關(guān)鍵誤差因子對(duì)偏振測(cè)量的影響,針對(duì)復(fù)合光楔的中心誤差提出了雙光束測(cè)量的誤差標(biāo)定方法;最后對(duì)空間調(diào)制光譜偏振探測(cè)系統(tǒng)展開(kāi)了實(shí)驗(yàn)研究,對(duì)單、雙復(fù)合光楔結(jié)構(gòu)形式進(jìn)行實(shí)驗(yàn)研究,確定了后續(xù)實(shí)驗(yàn)采用的光楔結(jié)構(gòu)形式;采用窄帶濾光片和光譜定標(biāo)光源相結(jié)合的方式對(duì)系統(tǒng)進(jìn)行光譜定標(biāo)實(shí)驗(yàn),獲取了分立光譜通道下不同入射偏振態(tài)條件下2D光譜偏振調(diào)制的圖像數(shù)據(jù),對(duì)圖像原始數(shù)據(jù)進(jìn)行解調(diào),解調(diào)得到的偏振度測(cè)量精度分別為Q≤2.5%,U≤4.2%,V≤7.1%,解調(diào)結(jié)果與雙復(fù)合光楔延遲器的軸心偏移誤差造成不同參數(shù)之間的串?dāng)_理論分析結(jié)果吻合。
[Abstract]:Spectral polarization detection technology is a new remote sensing technology combining polarization technology and spectral technology. It can obtain the polarization degree, polarization angle, polarization ellipticity, spectrum and other multi-dimensional information of the target optical radiation in recent years. The application of this technique in astronomical observation, target recognition and medical diagnosis has been rapidly developed, and spectral polarization detection technology has been studied and developed. This paper first introduces the research background of polarization detection technology and the main application fields of polarization detection technology, and investigates the development of modulation polarization detection technology at home and abroad. The related theory of polarization detection is analyzed and discussed. The principle of polarization measurement using Stokes parameter and several common modulation methods of polarization measurement of Stokes parameters are introduced. Their advantages and disadvantages are described. Then the theory of spatial amplitude modulation polarization spectrum detection based on composite wedge is analyzed and discussed. The detection principle and measurement equation of the spatial amplitude modulation polarization spectrum detection technique based on the single and double composite wedge structures are derived and the structure forms of the double composite optical wedges are analyzed. The ideal wedge structure model is selected. The key polarization device errors in the spatial modulation spectral polarization measurement system are studied, and the influence of the key error factors on the polarization measurement is analyzed. An error calibration method for double beam measurement is proposed for the center error of composite wedge. Finally, the spatial modulation spectral polarization detection system is studied experimentally, and the structure of single and double composite optical wedges is studied, and the structure of optical wedge used in subsequent experiments is determined. The spectral calibration experiment was carried out by combining narrow band filter and spectral calibration light source. The image data of 2D spectral polarization modulation under different incident polarization state in discrete spectral channel were obtained. The demodulation of the original image data shows that the measurement accuracy of polarization degree is Q 鈮，

本文編號(hào)：1371915